Bab hammeb-head attachment



March 29, 1932. J. a. ELLIOTT 1,851,697

WRECKING BAR HAMMER HEAD nmcmmnw Filed Sept. 29, 1930 In r entor:

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Patented Ma 29,1932

JOHN G. ELLIOTT, F DETROIT, MICHIGAN WBECKIN G BAR HAMMER-HEADATTACHMENT Application filed September 29, 1980. Serial No. 485,094.

My invention relates to improvements in tools or equipment used indismantling or wrecking buildings and other structures of woodconstruction, and particularly to what is known as the wrecking bar.

' It is a well known fact that the customary wrecking bar is providedwith a curved end forming a hook with a claw formed upon its end fordrawing nails from wood and the 10 like, and the opposite end thereofbeing deii flected, and tapering for prizing purposes,

which is adequate of course for the purpose. However in connection withthis work a substantially constructed hammer isan urgent requirement,and in order to fully meet this requirement I have devised and provideda hammer-head of ample weight andproportion that may be quickly andeasily attached to the wrecking bar by sliding the same over the bar ina telescopic manner and which is firmly secured thereto by a speciallydesigned key. The head may be shifted to any desired position upon thebar and securely locked by the said key. In this manner the bar isinstantly converted into a substantial hammer for the purpose of drivingnails and the like home when they are found to be headless, or otherwisein such condition that they may not be drawn out by ,the claw end of thesaid 80 bar.

The principal advantage of my invention is to facilitate this work ineffecting a great saving of time by supplying a suitable hammer with thebar, that is available at any time. Due to the extremely simpleconstruction of my invention the cost of manufacture thereof would be solow that it may be placed upon the market at a selling price that wouldinevitably create a reat demand, which is of course a decided a5 cialviewpoint. The invention possesses further advantages all of which willbe brought out during the course of the detailed description presentlyfollowing, illustrated within the accompanying drawings, and moreparticularly pointed out in the appended claims.

With reference to the drawings: Figure 1 is a full size fragmentary viewof vantage from a commerthe customary wrecking bar with my inventionconnected thereto in normal position for use. I

Figure 2 is a sectional view taken substantially upon line 2-2 ofFigure 1. Figure 3 is a view of the bottom of the hammer-head. V

Figure 4 is a part elevation and section of the hammer-head. I

Figure 5 is a perspective viewof the taso pered key of the invention.

My invention consists of a major body ortion designated by the numeral 1and which is provided with an opening therethrough, the lower portion 2of the said opening being to octagonall formed so as to conform to thesimilarly ormed bod portion of bar A, and the upper portion 3 o the saidopening being formed of an inner tapering shape to conform to thesimilarly tapered key 4, in order 7 to admit of the said key to driveandwedge the head substantially to the said bar, as clearly indicated inFigure 1.

The hammer-head is also provided with a lower portion as at 5, and thisportion having its lowermost exterior surface checkered as at 6, and thepurpose of this checkering being understood without further explanation,also it will be seen that neck 7 forms a part of the head as indicated.With parso ticular reference to Figures 2 and 4, it will be seen thatshoulder 8 is provided within the aforesaid opening in body portion 1 inorder that when the invention is assembled as in Figure 1, the pressureof key 4 will have direct bearing upon the bar and body 1 leaving aclearance between the said key and bar, as clearly shown in Figure 2 atthe numeral 8.

While I have herein illustrated one precise embodiment of my invention,the same is nevertheless susceptible to certain minor changes in theconstruction or design there of. However in the necessity of any chan esof this character during any probable furt er, development of theinvention for the market, the general principle as disclosed and theprimary intention of the invention would not become altered or affectedvas result of any changes made.

Having thus fully described my invention,

what is desired to be protected by Letters Patent is: a I t 1. Incombination with a wrecking bar, means for converting the said'bar intoa hammer, the said means comprising a hammer head formed so as to admitof the same being telescopically engaged with the said bar, and securelywedged thereupon, when slidably moved to any desired position upon thebar.

2. A hammer-head attachment fora wrecking bar, the said attachmenthaving a major body portion, an opening extending entirely through thesaid body portion, the lowermost part of the said opening beingoctagonally shaped so as to conform to the body of the said bar, and toengage the same in a telescopic manner; a tapering key of octagonalformation for the device, the uppermost part of the aforesaid openingbeing shaped of a tapering formation to conform to the said key, inorder that when the aforesaid bod portion of the attachment is slidablyengaged with the aforesaid bar the said key will be interposed betweenthe said bar and the said body portion, and drawing all of the aforesaidelements in a fixed wedge manner relative to each other.

3. In combination with a hammer-head attachment for\ an octagonallyformed wrecking bar, a key having its innermost surface .octagonallyshaped to conform to the said bar, and the outermost surface of the saidkey being octagonally formed, and tapering continuously from one of itsends to the opposite end thereof, for the purpose of locking theaforesaid attachment to the said bar in a removable manner.

' Intestimony whereof I hereunto afiix my signature.

JOHN G. ELLIOTT.

